72766727 has 4 divisors (see below), whose sum is σ = 79381896. Its totient is φ = 66151560.

The previous prime is 72766711. The next prime is 72766747.

72766727 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72766727 - 2⁴ = 72766711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72766747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3307568 + ... + 3307589.

It is an arithmetic number, because the mean of its divisors is an integer number (19845474).

Almost surely, 2^72766727 is an apocalyptic number.

72766727 is a deficient number, since it is larger than the sum of its proper divisors (6615169).

72766727 is a wasteful number, since it uses less digits than its factorization.

72766727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615168.

The product of its digits is 345744, while the sum is 44.

The square root of 72766727 is about 8530.3415523647. The cubic root of 72766727 is about 417.4882724663.

The spelling of 72766727 in words is "seventy-two million, seven hundred sixty-six thousand, seven hundred twenty-seven".